hello you.
Before, Yon need have to study some software design: Photoshop, corel...
Because, I very more help your design.
Some of the topics we plan on covering:

HTML and CSS

Dreamweaver, Frontpage, MS Expression

Photoshop, The Gimp

AJAX, Javascript,

Wordpress, Drupal, Joomla ...

PHP, ASP, RUBY, ColdFusion

MYSQL, SQL

Starting a web design business, dealing with clients etc.

Basic design, font

Hope you will success.

These programs are really made for web design. But if HTML is all the background you have, it might be best to start somewhere simple. Wordpress, Drupal, Joomla is one way to get familiar with web design...